-54.76% is the change from 820 to 371
Calculation steps:
[( 371 - 820 ) ÷ 820] x 100 = -54.76%
Formula
Percentage change = [(371 - 820) / 820] x 100
Subtract the new number by the original number
371 - 820 = -449
-449 ÷ 820 = -0.5475609756097561
-0.5475609756097561 x 100 = -54.76%